Ever stayed up renaming hundreds of files like IMG_0001.jpg one by one from a photo folder? pomiai’s Bulk File Renamer lets you stack rules — find/replace, trim characters, clean up spaces/case, add a prefix or suffix, sequential numbering, insert a date — in order to clean everything up in one pass. Preview the results live before committing, and undo instantly if something goes wrong.
When this comes in handy
- Cleaning up IMG_XXXX files downloaded from a camera or phone
- Batch-adding sequence numbers or dates to project files
- Cleaning up spaces or special characters in filenames all at once
- Rewriting complex naming patterns in bulk using regex
How to use it
- Select a folder (renames in place) or drag in files (produces a copy ZIP).
- Combine as many rules as you need — find/replace, trim, whitespace, case, prefix/suffix, numbering, date, extension.
- Check the live preview to see the new names before applying. Duplicates are flagged immediately.
- Apply the changes to the folder, or download the renamed copies as a ZIP.
Frequently asked questions
Does it work in every browser?
Renaming files in place by selecting a folder only works in browsers that support the File System Access API, like Chrome and Edge. In Safari or Firefox, selecting or dragging in files instead gives you a copy ZIP with the renamed files.
Can I undo a mistake?
Yes, right after applying changes to a folder, the undo button reverts the last change immediately.
Are my files uploaded to a server?
No. Everything is processed entirely in your browser, and files are never sent to an external server.
Can I save a rule combination I use often?
Yes, use the save rules button to export your current settings to a file, then load rules to bring them back next time.
Explore more free pomiai tools → checkpomi.com · YouTube @pomiai_official